
The company you work for has been hired to perform geological mapping and mineral potential assessment in a third-party area. During your fieldwork, you discovered a shear zone (SZ) with a general attitude of 0°/90°, approximately 1 km long and 2 m wide, which occurs over very weathered rocks with a schist appearance and contains quartz veins and veinlets with boxworks showing Fe oxides (see figure). The chemical analyses of the samples you collected gave interesting values of 6 to 14 ppm of Au. Your boss, very free, asked you to prepare a quote for the execution of an exploratory drilling hole for two different orientation conditions (60° and 70°) in order to investigate: the continuity of the mineralization at depth, what the host is and whether there is also mineralization on both sides. For this, your boss will tell you that the hole should intercept a ZC 100 meters below the surface, where the rock will certainly be fresh, and that the entire hole should be chemically applied. You must answer: (1) considering the lowest possible cost to the client, what will be the ideal distance from the center of the ZC on the surface to start the hole (see figure); (2) Considering the lowest possible cost to the client for the hole, what will be the best option for orientation and length of the drilling to the center of the ZC and another 20 meters after the center of the ZC so that the opposite fitting is also considered (see figure); (3) How much will this hole cost the client, in both inclinations (considering only the drilling + analysis)? (4) Which option will best analyze the fitting in the W of the ZC? Justify your answers graphically (to scale) and mathematically. Parameters: (a) cost of drilling + analysis = R$ 875.00/meter drilled; (b) it was agreed between the parties that, for operational reasons of the probe and for the study to be adequate, the orientation angles of the probe to be evaluated should be only 60° and 70°, with an azimuth of 270° in relation to the lagoon. Vertical section of the location of the borehole to be drilled W lagoon Depth 100 m ? E Weathering profile with unknown depth? ? ? ? ? LEGEND Country rock Shear zone with gossanized quartz veins/venules (6 to 14 ppm Au) Scale: 50 m (FIGURA 1)

to generate a solution
a solution
- Applications and Investigations in Earth Science ...Earth ScienceISBN:9780134746241Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. TasaPublisher:PEARSONExercises for Weather & Climate (9th Edition)Earth ScienceISBN:9780134041360Author:Greg CarbonePublisher:PEARSONEnvironmental ScienceEarth ScienceISBN:9781260153125Author:William P Cunningham Prof., Mary Ann Cunningham ProfessorPublisher:McGraw-Hill Education
- Earth Science (15th Edition)Earth ScienceISBN:9780134543536Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. TasaPublisher:PEARSONEnvironmental Science (MindTap Course List)Earth ScienceISBN:9781337569613Author:G. Tyler Miller, Scott SpoolmanPublisher:Cengage LearningPhysical GeologyEarth ScienceISBN:9781259916823Author:Plummer, Charles C., CARLSON, Diane H., Hammersley, LisaPublisher:Mcgraw-hill Education,





